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Best Cloud Email Security in 2026
Cloud email security tools help organizations evaluate protection for email across web, API, desktop, mobile and self-hosted deployments. This list is for readers comparing tools before selecting a service or deployment model.
- 19 apps
- Research read 28 Sept 2026
- How the order is worked out
- 1
Mailprotector
Free plan APIWebMailprotector brings filtering, encryption, and archiving products together for MSPs. Check Shield's Microsoft 365 limitation and request product pricing before choosing.
- 2
- 3
Cisco Catalyst Center
Paid APILinuxMac+3 - 4
Darktrace / EMAIL
Paid APIWebDarktrace / EMAIL combines behavioral threat detection with response options and coverage beyond inbound email. Pricing requires a request, while a 30-day trial is listed.
- 5
Mailinblack Protect
Paid APISelf-hostedWebMailinblack Protect combines inbound email filtering with link analysis and administrative controls, with deployment choices for different environments.
- 6
SpamHero Business Email Security
Free trial APIWebSpamHero combines inbound filtering, quarantine, and email continuity with Microsoft 365 and Google Workspace support.
- 7
MailChannels Inbound Filtering
Paid APIWebInbound Filtering combines mail threat detection with quarantine, search, and per-domain controls for hosting providers.
- 8
Sophos Secure Message
by Sophos Secure MessageFree trial WebChoose Sophos Email if your organization needs inbox threat protection alongside email encryption and data loss prevention.
- 9
Barracuda Message Archiver
Paid MacWebWindows - 10
Cloudflare Email Security
Paid WebCloudflare Email Security covers email filtering, impersonation defense, attachment analysis, and isolation across several paid plans.
- 11
- 12
Hornetsecurity 365 Total Protection
Free trial Web - 13
Forcepoint Email Security Cloud
Paid Web - 14
Mimecast Email Security
Paid Web - 15
- 16
- 17
Symantec Email Security.cloud
Paid Web - 18
Trustifi Email Security
Paid Web - 19
VIPRE Email Security
Paid Web
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
Compare free-plan availability, trial terms, paid-from pricing, deployment model, threat detection, supported email platforms, post-delivery remediation, data loss prevention and maximum users. If reading or changing code matters, check the licence and whether self-hosting is supported.
Questions
Are free plans available for cloud email security?
A free plan is listed for Mailprotector. Check the current plan terms and limits before choosing it.
Which products list free trials?
Check Point Email Security lists a 14-day trial, while Darktrace / EMAIL lists a 30-day trial. Terms can vary, so review the offer before starting.
How is pricing shown?
Paid pricing may be shown as “pricing on request” instead of a starting figure. Request a quote and confirm what users and controls it includes.
What platforms can these tools run on?
The listed platforms include web, API, Windows, macOS, self-hosted and iOS. Confirm the deployment model for the product you are considering.
Which protection features should I compare?
Compare threat detection, email-platform support, post-delivery remediation, data loss prevention and maximum users.
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